Questions: Question 5 Which layer of the heart lines the chambers and valves? Epicardium Endocardium Myocardium Pericardium

Question 5 Which layer of the heart lines the chambers and valves? Epicardium Endocardium Myocardium Pericardium
Transcript text: Question 5 Which layer of the heart lines the chambers and valves? Epicardium Endocardium Myocardium Pericardium
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Solution

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The answer is the second one (B): Endocardium.

Explanation for each option:

  • Epicardium: This is the outermost layer of the heart wall. It is not responsible for lining the chambers and valves of the heart.

  • Endocardium: This is the innermost layer of the heart. It lines the chambers and valves, providing a smooth surface for blood to flow over and preventing blood clots.

  • Myocardium: This is the muscular middle layer of the heart wall responsible for contracting and pumping blood. It does not line the chambers and valves.

  • Pericardium: This is a double-walled sac that surrounds the heart, providing protection and anchoring it in place. It does not line the chambers and valves.

In summary, the endocardium is the layer that lines the chambers and valves of the heart.

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